Device for disconnecting and switching a load

Abstract

So that a fuse or a plug can be plugged in safely without generating an arc, the invention provides a device ( 1 ) for disconnecting and switching a load ( 2 ) with a control device ( 4 ) and with a switching element ( 14 ) which is arranged between a voltage supply ( 6 ) and the load ( 2 ) and is connected to the control device ( 4 ), an input ( 16 ) for the control device ( 4 ), provided between the voltage supply ( 6 ) and the switching element ( 14 ), being used to monitor at least one voltage limiting value, and the control device ( 4 ) deactivating the switching element ( 14 ) when the voltage drops below a first voltage limiting value.

1 . Device ( 1 ) for disconnecting and switching a load ( 2 ) with a control device ( 4 ), characterized by a switching element ( 14 ) which is arranged between a voltage supply ( 6 ) and the load ( 2 ) and which is connected to the control device ( 4 ), and an input ( 16 ) for the control device ( 4 ), provided between the voltage supply ( 6 ) and the switching element ( 14 ), for monitoring at least one voltage limiting value, the control device ( 4 ) deactivating the switching element ( 14 ) when the voltage drops below a first voltage limiting value.  
     
     
         2 . Device according to  claim 1 , characterized in that the control device ( 4 ) activates the switching element ( 14 ) when the voltage exceeds a second voltage limiting value.  
     
     
         3 . Device according to  claim 1  or  2 , characterized in that a semiconductor element or a relay is provided as the switching element ( 14 ).  
     
     
         4 . Device according to one of  claims 1  to  3 , characterized in that the control device ( 4 ) and the load ( 2 ) are jointly protected by means of a fuse element ( 10 ), it being possible to switch the switching element ( 14 ) with a delay when the voltage exceeds the second voltage value.